There's an "if a tree falls in the forest" version of "if the viewer leaves the room" at which point has a theft still been visited upon the broadcaster? The business that paid for the ad?

In a newspaper if I skip over ads with my eyes do you think I've marginalized/pirated/stolen from the business that paid for the ad? They paid for placement and not an impression. I'd argue that if YouTube presents the ad and my browser/app/whatever skips it then YouTube satisfied its obligation and that's where it ends. The advertiser, knowing full well the limitations of the access mechanism, made a choice to throw money into this version of the attention economy. It's obviously worth it to them or they wouldn't do it, or haven't made as careful of an economic decision as I would imagine I suppose.

Ok, let’s switch it up a bit. I give the ad-full newspaper to someone not speaking the local language. Or an illiterate person. Or a monkey trained to be good with scissors. Is this also piracy? At what point does it become piracy? How little of an ad should someone see/understand before it counts as a “valid” ad view? A few words? A full sentence? Etc.

It's not piracy. You might have a problem with it ethically. But you're not breaking copyright laws by blocking ads.

Another way to look at it is additive rather than subtractive. If I visit a site with a text only browser that cannot display ads, what is your position then? And if I then implement the ability for my browser to play only the main video on any page, what then?

When it comes down to it, we have no obligation to view the content on a webpage the way the publisher of said webpage wants us to. You can think of plenty of other examples that make "adblocking is piracy" ridiculous - I invert the colors but the publisher doesn't want me to see it with inverted colors. I wear sunglasses while looking at it, which changes the way it looks. Maybe the site I use always puts an ad in the same place so I stick a bit of tape on my monitor in that location, is that bad?

I’m totally cool with “screwing over” people who make their income screwing gullible people into falling for scams or buying useless, overpriced junk they don’t need. I don’t need to rationalize it for myself, I’m just trying to show some people the error in their ways, but maybe their portfolio of ad-related stocks is clouding their vision?

The choice of an individual to skip an advertisement has minimal impact on the content creator or the platform. This person isn't accountable for the decisions of others regarding whether they watch the ad or not. Ultimately, their actions only affect themselves and do not influence anyone involved in the advertisement process.

You're not replying directly to the last comment because it posed a hard question, and you've resorted to an emotional appeal.

Generally accepted by whom? There are many countries that only consider distribution illegal so I don't think it's generally accepted at all.

> a site streaming bad DVD rips

This is redistributing.

If its so gross you dont have to use/watch youtube!

Ignoring the "garbage" is absolutely valid, but hiding it so that you never see it is what makes it piracy.